Machine for sawing staves.



PATENTED OUT. 9., 1906-.

' E. E. FLORA.

MACHINE FOR SAWING-STAVES.

APPLICATION FILED JUNE 12, 1905 6 SHEETS-SHEET 1.

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MACHINE FOR SAWING STAVES.

APPLIOATION rum) JUNE 12, 1905.

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No. 832,602. PATBNTED'OQT. 9, 1906. B. E. FLORA.

, MACHINE FOR SAWING STAVBS. nrmonron FILED JUNE 12, 1905.

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No. 832,602. v PATENTED OCT. 9, 1906.

' E. E. FLORA.

MACHINE FOR SAWING STAVE S.

APPLIOATION FILED JUNE 12, 1905.

6 SHEETS-SHEET 5.

m: NORRIS PETERS 50., wasnmuron, n. c.

PATBNTED OCT. 9, 1906.

E. E. FLORA. MACHINE FOR SAWING STAVES.

APPLICATION FILED JUNE 12, 1905.

6 SHEETS-SHEET 6.

ELLSWVORTH E. FLORA, OF CHICAGO, ILLINOIS.

MACHINE FOR SAWING STAVES'.

Specification of Letters Patent.

Patented Oct. 9,. 1906.

Application filed June 12,1905. $e1ia1 No. 264,928.

To all whom it may concern.-

Be it known that I, ELLSWORTH E. FLORA, a citizen of the United States of America, and a resident of Chicago, Cook county, Illinois, have invented a certain new and useful Improvement in Machines for Sawing Staves, of which the following is a specification.

My invention relates to an automatic stave-sawing machine.

The object of my invention is to provide a machine for the sawing of staves for barrels, kegs, tubs, or other receptacles in which it is necessary to use rounded segmental parts for forming their periphery.

More particularly, the object of my invention is to provide a machine of which each operation is strictly automatic and when once started will continue to operate and adjust the bolt or billet after one stave has been removed therefrom into position for the cutting of the next stave.

The particular objects of my invention are to provide a stave-sawing machine with a carriage for carrying the bolt or billet which is automatically shifted backward and forward; to provide means for automatically varying the speed of the advance movement of said carriage, whereby the rate at which the billet is fed into the saw may be controlled by the hardness of the wood or the difficulty of cutting it to provide means for adjusting the backward and forward. movement of said carriage, so that its movement may be controlled manually; to provide means for automatically releasing the bolt or billet upon the return of the carriage to its initial position and means for clamping said billet and holding it firmly upon the carriage at the moment said carriagebegins its forward movement; to provide a stave-sawing machine in which a stave when nearly cut through from the under side of the billet will be supported so that it will not split off or leave a stub-short-in other words, will. permit the saw to cut through to the end of the billet, leaving the stave free from any irregularity throughout its entire length; to pro vide a stave-sawing machine in which the table is automatically adjusted so as to be adapted to receive billets of irregular shape in such a position that the saw will run parallel with the grain of such irregular billets; to provide a stave-sawing machine with adjustable and pivotal locking clamps for holding the bolt or billet to the carriage, so that irregularities in the end cut of the billet will v not interfere with the secure clamping of said bolt or billet. These and other objects of my invention will hereinafter more fully appear.

In the accompanying drawings, Figure 1 is a side view of my improved stave-sawing. machine. Fig. 2 is a plan view of said machine. Fig. 3 is a side view opposite Fig. 1. Fig. 4 is an end view. Fig. 5 is a vertical longitudinal sectional view on the line 5 5 of Fig. 4. Figs. 6 to 9 ,inclusive, are detail views.

A represents the frame of my improved automatic stave-sawing machine, inwhich is mounted upon suitable bearings B a drivingshaft 0, provided with a driving-pulley D, together with a counterpulley E. Upon the driving shaft C is mounted the cylindrical saw F, adapted to rotate and to cut from the under side of the billet the stave to be sawedas the carriage G is advanced toward the saw.

guide-rollers Q21 to facilitate the movement of The carriage Gr consists of two v, cross-heads connected together by parallel.

,the carriage back and forth upon suitable, 5 rails Q22, mounted upon the side frames of the machine.

j The movement of the carriage G is controlled by friction-disks H and H, which are automatically brought in contact with another disk I, which is driven by worm-gear ing and the counter-shaft J, upon which is 'mounted the counter-pulley K, which is adapted to be suitably connected with the counter-pulley E, mounted upon the driving shaft C. The friction-disk H is slidably mounted or splinedon the shaft L, which in turn ismounted in suitable bearings Z and Z, attached to the frame A. Rigidly mounted upon the shaft L is a gear-wheel M, and meshed with this gear-wheel and mountedupon the shaft N is the gear-wheel- O. The shaft N is also mounted in suitable bearings n and n, rigidly attached to the frame Upon the shaft N is also rigidly mounted the friction-disk H in such a position that it will engage the face of the friction-disk I op 0- site to that face engaged by the friction-disk H and at such a distance from the frictiondisk H that when the frictiondisk H is in engagement with the face of the friction-disk. I the friction-disk H will be out of engagement with the opposite face of the friction-disk I. The friction-disk H is provided with a hub h, in which is out an annular groove, and in the groove is inserted a collar 7L2, having trun- 1 ment of the carriage G. The cam-surfaces nions h, to which is attached a rockingarm l i and 'i will remain in this shifted position 7L3, rigidly mounted upon the rock-shaft h. The rock-shaft h is suitablymounted in bearings 7L5 and it upon the frame A. At the opposite end of the shaft h and rigidly attached thereto is the lever 727. By means of this lever h7 the friction-disk H can be adjusted manually with respect to the friction-disk I,

and by this means the speed of the gear-wheel M may be varied, thus varying the speed of the gear-wheel O and through it the speed of the gear-wheel P, which is also rigidly mounted upon the shaft N. The gear-wheel P engages a rack R, rigidly attached to the carriage G, and provides a means for shifting the carriage backward and forward. Thus by' adjusting the lever k the rate of the advance movement of the carriage G may be manually controlled. Rigidly attached to the friction-disk I is the worm gear-wheel T, which meshes into and is driven by the worm .S, rigidly fixed upon the counter-shaft J,

thus forming a complete power-transmittin connection between the driving-shaft C an the carriage G. It will thus be seen that if in the act of sawing the stave the saw strikes 1 a knot or any obstruction in the billet, caus ing the speed of the saw to slacken, the ad vance movement of the carriage will slacken proportionately. Thus the feed is automatically controlled.

For automatically reversing the direction of the movement of the carriage G the friction-disk I is revolubly mounted upon the shaft i, which in turn is suitably mounted in I bearings in the frame A, so that the shaft 7 can be longitudinally shifted in the bearin s in the frame A. Upon the shaft i and rigid y attached thereto is the collar i, forming a stop for the spring i which has for its seat the frame A. Upon the shaft 4 and rigidly attached thereto is also the collar i which is provided with an upwardly-extending arm i which in turn is adapted to be enga ed by the stops q and q, attached to the amework of the carriage G. These shiftable stops q and 9 may be adjusted by the setscrews g and g to any desired position relative to the framework of the carriage G. The collar 4? is provided with a cam-surface i which in turn slides upon a cam-surface i of I a cam i rigidly attached to the frame A.

Thus by the movement of the upwardly-extending arm '5, caused by the engagement with the stops qand q, the shaft 71 1s rocked. The cam-surfacei of the cam i slides upon 3 the cam-surface i of the rigid cam 07, thereby shifting longitudinally the shaft 11, compressing the spring 5 and shifting the friction-disk I out of engagement with the friction-disk H and into engagement with the friction-disk H. By this means the friction-disk H is o if and restores the two cams to their normal position and then through the action of the spring i shifting the friction-disk I into engagement with the friction-disk H. Provision is made for rocking shaft 7', manually by securing at one end thereof a handle '5 For holding the bolt or billet in place while being sawed I provide serrated clampingjaws (l and The serrated clamping-jaw g is slidably mounted upon the rods (1 and f of the carriage G, and attached to the serrated jaw g are toggle connections g and g, which are bound together by a spring always under tension. The toggle connections and 1 are pivotally connected to other toggles and which are pivoted to the cross-head g of the carriage G. The toggles Q12 and are provided with outer arms (1 and Q16, which in the backward movement of the carriage G meet with stops at and a, rigidly attached to the frame A. By this means the serrated jaw Q5 is withdrawn from its hold upon the bolt or billet and the bolt or billet is allowed to fall upon a table U. Immediately upon the advance of the carriage G the arms Q15 and are released from their engagement with the stops a and a, and through the action. of the spring q the serrated jaw q is advanced along the rods g and g and engages and holds firmly in place the bolt or billet. The serrated jaw q is also slidably mounted upon the rods g and g and is provided with a screw and hand-wheel adjustment g" for the purpose of adjusting the jaw to the different lengths of the bolt or' billet to be sawed.

For adjusting the position of the bolt or billet Within the serrated jaws g and q, so that the stave to be sawed may be sawed straight with the grain of the bolt or billet and to regulate the thickness of the stave, I :10 provide a tilting table U, hinged to the frame V at u and supported by a lug u, which rests upon an adjusting device cf, also pivoted to frame V. Frame V is vertically adjustable with respect to the frame A in suitable guide I 15 ways attached to the frame by means of a screw R, provided at its lower end with a bevel-gear r, engaging the bevel-gear r, rigidly attachedto the shaft W, and the handwheel 1. Any other of the many well-known I 20 devices may be substituted for the screw R for accomplishing this adjustment without departing from the spirit of my invention;

By means of this adjusting-screw R the subsidiary frame V and the table U, attached I25 thereto, can be raised or lowered, thus regu lating the position of the bolt or billet when the clamping-j aw f impinges upon the forward end of the bolt or billet, and thus regu lating the distance the bolt or billet is held 1 0 below the carriage G and providing a means for controlling the thickness of the stave to be sawed.

For adjusting the table with reference to the grain of the billet to be sawed an adjusting device is provided consisting of a toothed segment 01?, pivoted at a to the frame V and having a cam-surface upon its upper edge which contacts with the lug '11, upon one end of the table. This segment is also provided with an extended arm, to the end of which is attached a spring of, the other end of the spring being connected to the main frame. To operate the segment, a rod or, connected thereto and to a foot-lever, is provided, and to hold said segment in its normal and adjusted positions a gravity-pawl a is provided, being pivoted to the frame V and having an upwardly-extending arm. Said pawl is operated by a stop q, secured to the frame of thecarriage Gr When the carriage reaches the limit of stroke toward the saw, this operation: returns the table to its normal position to receive the billet ready to-be adjusted again as desired. The sides of the main frame are supports A A", and rigidly mounted upon these cross-braces are the side supports a, a

of the conveyer X, which extends into the saw F.

Mounted upon the side support a within the saw F is the rockshaft W, to which the rock-arms w and w are rigidly attachedl surface against which a lug presses when the carriageG is-nearing the completion of its advance movement, thereby causing the rock-bar V to rotate and the armsw and w to swing'up and support the stave-until cut off, the'saidarms remaining in this position until the carriage Gr returns sufficiently to release the spiral cam w from the pressure of the-lug Q18. The stave then falls of its own weight upon an endless-belt conveyer X, which is adapt-ed to run upon rollers between the side supports a and a.

The operation is as follows: A billet of wood to be sawed is placed upon the table U,-

and the table is then adjusted to the grain of the Wood and alsoin relation to the thickness of the stave to be sawed. Power is then applied, the carriage starts to move forward, and at the start the toggle-levers are released from their stops, causing the serrated carrying-jaws to bite into the billet and carry The rock-shaft W is it forward to the saw. When thestave has almost been sawed fromthe'bil let, the'lugg upon the carriage contacts with: the spiral cam w turning the rock-shaft W and elevating the arms w and w to support the stave until it is completely sawed from the billet, preventing any stub-short. At the beginning of the return of the carriage the lug (1 gradually allows the spiral and rock-shaft to turn, causing thesupporting-arms to drop, allowing the stave to fall directly upon the conveyer X and be carried tothe end of the machine. The billet is then carried back and deposited again upon the table.

I claim' 1. A machine for sawing staves comprising a frame, a main driving-shaft, a cylindrical saw, a carriagefor carrying the bolt orbillet to the saw, means for imparting movement to said carriage and a pivoted stave-support within the saw operated by thecarri'age.

2. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindricalsaw, a table for supporting a billet to be sawed, a carriage for carrying the billet to the saw, means for imparting movement to said carriage and a pivoted stave-support within the saw operated: by the carriage.

3. A machine for'sawing staves, comprising a frame, a main driving shaft, a cylindrical saw, a table for supporting a billet to be sawed, a carriage for carrying the billet to the saw, means for imparting a back-andforthmovement to the carriage anda pivoted stave-support Within the saw operated by the carriage.

4. A machine for sawing staves, comprising a frame, a main driving-shaft, acylindrical saw, a table for supporting a billet tobe sawed, a carriage for carrying" the billet to the saw, means for imparting a back-andforth movement to the carriage, and a pivot edstave-support and means for operating the pivoted support to a position to support the stave during the forward movement of the carriage and to a discharging position I TO during the backward movement of the carria e.

5 5A machine for sawingstaves, comprising a-frame, a main driving-shaft, a cylindrical saw, table for supporting a billet to be sawed, a carriage for carrying the bi'llet tothe saw, means for imparting a back-andforth movement to the carriage, a pivoted stave-support and means for operating the pivoted support to a position to support the stave during the forward movement of the carriage and tea discharging position durin the backward movement of the carriage, an aconveyer.

6. A machine for sawing staves, comprising a frame, a main driving shaft,acylindrical saw, a table for supporting a billet to be sawed, a carriage for carrying the billet to .the saw, means for imparting a back-amt &

forth movement to the carriage, a pivoted stave-support within the saw and means for operating the pivoted support to a position to support the stave durin the forward movement of the carriage an to a discharging position during the backward movement of the carriage, and a conveyer.

7. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindrical saw, a table for supporting a billet to be sawed, a carriage for carrying the billet to the saw, means for imparting a back-andforth movement to the carriage, a pivoted stave-support comprising a rock-shaft, suitable supports therefor, supporting-arms projecting from the rock-shaft and a cam upon the shaft, and a conveyer.

8. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindrical saw, an adjustable table for supporting a billet to be sawed, a carriage for carrying the billet to the saw, means for imparting a back-andforth movement to the carriage, a pivoted stave-support Within the saw and a conveyer.

9. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindrical saw, an adjustable table for supporting a billet to be sawed, means for adjusting said table vertically, means for adjusting said table angularly, a carriage for carrying the billet to the saw, means for imparting a back-andforth movement to the carriage, a pivoted stave-support within the saw, and a conveyer.

10. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindrical saw, an adjustable table for supporting a billet to be sawed comprising a support for the billet mounted upon a suitable frame said frame adapted to slide in suitable guideways upon the main frame and means for adjusting a carriage for carrying the billet to the saw, means for imparting a back-andforthmovement to the carriage, a pivoted stave-support withinthe saw and a conveyer.

11. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindrical saw, a verticallyand angularly adjustable table for supporting a billet to 'be sawed comprising, a support for the billet pivotally mounted upon a suitable frame, said frame adapted to slide in suitable guideways upon the main frame, means for adjusting vertically and means upon the vertically-adjustable frame for angularly adjusting-the supporting-table, a carriage for carrying the billet to the saw, means or imparting a backand-forth movement to the carriage, a pivoted stave-support within the saw, and a conveyer.

12. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindrical saw, a vertically and radially adjustable table for supporting a billet to be sawed, comprising a support for the billet pivotally mounted upon a suitable frame, said frame being vertically adjustable, means for adjusting it vertically and means upon the said vertically-adjustable frame for radially adjusting the table comprising a spring-held pivoted toothed segment supporting one end of the table, means for operating the segment and means for retaining it in its adjusted position, a carriage for carryingthe billet to the saw, means for imparting a back-and-forth movement to the carriage, a pivoted stavesupport and a conveyer.

13. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindrical saw, a vertically and angularly adjustable table for supporting a billet to be sawed, a carriage for carrying the billet to the saw, comprising a suitable frame supporting clampingjaws automatically operated to clamp and release the billet, means for imparting a back-and-forth movement to the carriage, a pivoted stave-support mounted Within the saw, and a conveyer.

14. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylin drical saw, a vertically and radially adjustable tablefor supporting a billet to be sawed,

a carriage for carrying the billet to the saw comprising a suitable frame supporting clamping-jaws, automatically operated to clamp the billet by toggle-levers and stops and automatically operated to release the billet by said toggle-levers and a spring,

means for imparting a back-and-forth movement to the carriage, a pivoted stave-support mounted within the saw and a conveyer.

15. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindrical saw, a vertically and angularly adjustable table for supporting the billet to be sawed, a carriage for carrying the billet to the saw, means for imparting a back-and-forth movement to the carriage, comprising a counter-shaft, means for driving, a worm thereon, a worm-gear upon a slidable crossshaft meshing with said worm, a frictionsdisk upon the shaft with the Worm, friction-disks;

mounted upon separate shafts upon each side I of the first-mentioned disk, gear-wheels upon said shafts adapted to mesh together and an additionalgear-Wheel upon one of said shafts adapted to mesh with a rack-bar upon the carriage, a pivoted stave-support mounted within the saw and a conveyer.

16. A machine for sawing staves, comprising a frame, a main driving-shaft, a cylindrical saw, a vertically and angularly adjustable table for suporting the billet to be sawed, a carriage fbr carrying the billet to the saw, means for imparting a back-and forth movement to the carriage comprising suitable frictiondisks and gear-wheel's, means for automatically reversing the movement of the carriage comprising a slidable shaft upon which one of the friction-disks is mounted also being provided With a cam adapted to engage a rigid cam upon the main frame, a spring upon the shaft for returning it to its normal position and an upwardly-extending arm upon the shaft adapted to be engaged by stops upon the carriage, a pivoted stave-support mounted Within the saw and a conveyor.

17. A machine for sawing staves, comprising a frame, a main drivingshaft, a cylindrical saw, a vertically and angularly adjustable table for supporting a billet to be sawed, a carriage for carrying the billet to the saw,

riage, means for regulating the speed of thecarriage, a pivoted stave-support mounted 'Within the saw, and a conveyer.

Signed by me at Chicago, Cook county, Illinois, this 24th day of May, 1905.

ELLSWORTH E. FLORA. Witnesses:

SARAH LEWIS, ALBERT SAUSER. 

